Mercurial > sdl-ios-xcode
annotate test/loopwave.c @ 1935:8a9b367a80f3
Patch from 1.2 branch...fix compilation on Qtopia video target (reference
Bugzilla #285).
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Mon, 24 Jul 2006 23:30:14 +0000 |
parents | c121d94672cb |
children | 5f6550e5184f |
rev | line source |
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0 | 1 |
2 /* Program to load a wave file and loop playing it using SDL sound */ | |
3 | |
4 /* loopwaves.c is much more robust in handling WAVE files -- | |
5 This is only for simple WAVEs | |
6 */ | |
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7 #include "SDL_config.h" |
0 | 8 |
9 #include <stdio.h> | |
10 #include <stdlib.h> | |
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11 |
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12 #if HAVE_SIGNAL_H |
0 | 13 #include <signal.h> |
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14 #endif |
0 | 15 |
16 #include "SDL.h" | |
17 #include "SDL_audio.h" | |
18 | |
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19 struct |
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20 { |
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21 SDL_AudioSpec spec; |
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22 Uint8 *sound; /* Pointer to wave data */ |
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23 Uint32 soundlen; /* Length of wave data */ |
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24 int soundpos; /* Current play position */ |
0 | 25 } wave; |
26 | |
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27 |
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28 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
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29 static void |
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30 quit(int rc) |
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31 { |
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32 SDL_Quit(); |
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33 exit(rc); |
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34 } |
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35 |
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36 |
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37 void SDLCALL |
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38 fillerup(void *unused, Uint8 * stream, int len) |
0 | 39 { |
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40 Uint8 *waveptr; |
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41 int waveleft; |
0 | 42 |
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43 /* Set up the pointers */ |
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44 waveptr = wave.sound + wave.soundpos; |
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45 waveleft = wave.soundlen - wave.soundpos; |
0 | 46 |
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47 /* Go! */ |
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48 while (waveleft <= len) { |
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49 SDL_MixAudio(stream, waveptr, waveleft, SDL_MIX_MAXVOLUME); |
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50 stream += waveleft; |
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51 len -= waveleft; |
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52 waveptr = wave.sound; |
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53 waveleft = wave.soundlen; |
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54 wave.soundpos = 0; |
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55 } |
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56 SDL_MixAudio(stream, waveptr, len, SDL_MIX_MAXVOLUME); |
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57 wave.soundpos += len; |
0 | 58 } |
59 | |
60 static int done = 0; | |
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61 void |
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62 poked(int sig) |
0 | 63 { |
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64 done = 1; |
0 | 65 } |
66 | |
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67 int |
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68 main(int argc, char *argv[]) |
0 | 69 { |
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70 int i, n; |
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71 |
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72 /* Print available audio drivers */ |
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73 n = SDL_GetNumAudioDrivers(); |
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74 if (n == 0) { |
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75 printf("No built-in audio drivers\n"); |
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76 } else { |
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77 printf("Built-in audio drivers:"); |
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78 for (i = 0; i < n; ++i) { |
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79 if (i > 0) { |
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80 printf(","); |
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81 } |
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82 printf(" %s", SDL_GetAudioDriver(i)); |
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83 } |
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84 printf("\n"); |
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85 } |
0 | 86 |
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87 /* Load the SDL library */ |
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88 if (SDL_Init(SDL_INIT_AUDIO) < 0) { |
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89 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); |
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90 return (1); |
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91 } |
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92 if (argv[1] == NULL) { |
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93 argv[1] = "sample.wav"; |
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94 } |
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95 /* Load the wave file into memory */ |
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96 if (SDL_LoadWAV(argv[1], &wave.spec, &wave.sound, &wave.soundlen) == NULL) { |
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97 fprintf(stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError()); |
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98 quit(1); |
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99 } |
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100 |
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101 wave.spec.callback = fillerup; |
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102 #if HAVE_SIGNAL_H |
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103 /* Set the signals */ |
0 | 104 #ifdef SIGHUP |
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105 signal(SIGHUP, poked); |
0 | 106 #endif |
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107 signal(SIGINT, poked); |
0 | 108 #ifdef SIGQUIT |
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109 signal(SIGQUIT, poked); |
0 | 110 #endif |
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111 signal(SIGTERM, poked); |
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112 #endif /* HAVE_SIGNAL_H */ |
0 | 113 |
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114 /* Initialize fillerup() variables */ |
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115 if (SDL_OpenAudio(&wave.spec, NULL) < 0) { |
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116 fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError()); |
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117 SDL_FreeWAV(wave.sound); |
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118 quit(2); |
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119 } |
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120 SDL_PauseAudio(0); |
0 | 121 |
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122 /* Let the audio run */ |
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123 printf("Using audio driver: %s\n", SDL_GetCurrentAudioDriver()); |
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124 while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING)) |
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125 SDL_Delay(1000); |
0 | 126 |
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127 /* Clean up on signal */ |
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128 SDL_CloseAudio(); |
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129 SDL_FreeWAV(wave.sound); |
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130 SDL_Quit(); |
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131 return (0); |
0 | 132 } |